Electro- and Thermo-Reflectance of Lead Selenide Single Crystal

Abstract

The electroreflectance and thermoreflectance spectra of PbSe single crystal have been measured in the visible light region. From the analysis of the structures in both two spectra in terms of the electro- and thermo-optical theory, the energies of transitions of Σ₅(6)−Σ₅(5), L₆⁻(7)−L₆⁺(5), L₆⁻(6)−L₄₅⁺(4) and Δ₆(6)−Δ₆(5) are determined to be 1.53, 1.75, 1.93 and 3 eV, respectively.